| 1990 | Total Purchased Electricity Consumption | 24,549,000 | kWh |
| 1991 | Total Purchased Electricity Consumption | 24,549,000 | kWh |
| 1992 | Total Purchased Electricity Consumption | 21,772,600 | kWh |
| 1993 | Total Purchased Electricity Consumption | 23,289,400 | kWh |
| 1994 | Total Purchased Electricity Consumption | 22,531,200 | kWh |
| 1995 | Total Purchased Electricity Consumption | 22,130,400 | kWh |
| 1996 | Total Purchased Electricity Consumption | 23,157,600 | kWh |
| 1997 | Total Purchased Electricity Consumption | 27,379,200 | kWh |
| 1998 | Total Purchased Electricity Consumption | 27,653,948 | kWh |
| 1999 | Total Purchased Electricity Consumption | 27,681,730 | kWh |
| 2000 | Total Purchased Electricity Consumption | 4,256,179 | kWh |
| 2001 | Total Purchased Electricity Consumption | 5,050,268 | kWh |
| 2002 | Total Purchased Electricity Consumption | 2,941,776 | kWh |
| 2003 | Total Purchased Electricity Consumption | 2,489,335 | kWh |
| 2003 | Voluntary unbundled RECs Purchased | 1,000,000 | kWh |
| 2003 | Voluntary unbundled RECs Verification | Not verified | |
| 2004 | Total Purchased Electricity Consumption | 2,167,098 | kWh |
| 2004 | Voluntary unbundled RECs Purchased | 1,000,000 | kWh |
| 2004 | Voluntary unbundled RECs Verification | Not verified | |
| 2005 | Total Purchased Electricity Consumption | 1,542,194 | kWh |
| 2005 | Voluntary unbundled RECs Purchased | 1,000,000 | kWh |
| 2005 | Voluntary unbundled RECs Verification | Not verified | |
| 2006 | Total Purchased Electricity Consumption | 3,058,505 | kWh |
| 2006 | Voluntary unbundled RECs Purchased | 1,000,000 | kWh |
| 2006 | Voluntary unbundled RECs Verification | Not verified | |
| 2007 | Total Purchased Electricity Consumption | 3,570,600 | kWh |
| 2007 | Voluntary unbundled RECs Purchased | 1,000,000 | kWh |
| 2007 | Voluntary unbundled RECs Verification | Not verified | |
| 2008 | Total Purchased Electricity Consumption | 6,539,669 | kWh |
| 2008 | Voluntary unbundled RECs Purchased | 1,000,000 | kWh |
| 2008 | Voluntary unbundled RECs Verification | Not verified | |
| 2009 | Total Purchased Electricity Consumption | 5,932,516 | kWh |
| 2009 | Voluntary unbundled RECs Purchased | 2,500,000 | kWh |
| 2009 | Voluntary unbundled RECs Verification | Not verified | |
| 2010 | Total Purchased Electricity Consumption | 6,279,186 | kWh |
| 2010 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2010 | Voluntary unbundled RECs Verification | Not verified | |
| 2011 | Total Purchased Electricity Consumption | 3,421,454 | kWh |
| 2011 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2011 | Voluntary unbundled RECs Verification | Not verified | |
| 2012 | Total Purchased Electricity Consumption | 4,185,675 | kWh |
| 2012 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2012 | Voluntary unbundled RECs Verification | Not verified | |
| 2013 | Total Purchased Electricity Consumption | 4,376,369 | kWh |
| 2013 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2013 | Voluntary unbundled RECs Verification | Not verified | |
| 2014 | Total Purchased Electricity Consumption | 3,487,274 | kWh |
| 2014 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2014 | Voluntary unbundled RECs Verification | Not verified | |
| 2015 | Total Purchased Electricity Consumption | 4,100,280 | kWh |
| 2015 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2015 | Voluntary unbundled RECs Verification | Not verified | |
| 2016 | Total Purchased Electricity Consumption | 5,491,583 | kWh |
| 2016 | Voluntary unbundled RECs Purchased | 4,381,000 | kWh |
| 2016 | Voluntary unbundled RECs Verification | Not verified | |
| 2017 | Total Purchased Electricity Consumption | 3,883,223 | kWh |
| 2017 | Voluntary unbundled RECs Purchased | 4,127,000 | kWh |
| 2017 | Voluntary unbundled RECs Verification | Not verified | |
| 2018 | Total Purchased Electricity Consumption | 6,903,656 | kWh |
| 2018 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2018 | Voluntary unbundled RECs Verification | Not verified | |
| 2019 | Total Purchased Electricity Consumption | 4,808,754 | kWh |
| 2019 | Voluntary unbundled RECs Purchased | 4,500,000 | kWh |
| 2019 | Voluntary unbundled RECs Verification | Not verified | |
| 2020 | Total Purchased Electricity Consumption | 4,042,386 | kWh |
| 2020 | Voluntary unbundled RECs Purchased | 4,000,000 | kWh |
| 2020 | Voluntary unbundled RECs Verification | Not verified | |
| 2021 | Total Purchased Electricity Consumption | 3,102,414 | kWh |
| 2021 | Voluntary unbundled RECs Purchased | 2,388,500 | kWh |
| 2021 | Voluntary unbundled RECs Verification | Not verified | |